Heating Without Any Actual Heat

This paper examines how pressure can induce temperature changes and phase transitions without the direct transfer of heat. Beginning with the classical regelation experiment, it explains how pressure lowers the melting point of ice and extends this principle to gases, glaciers, and everyday technologies such as pressure cookers and atmospheric cooling. Recent advances in barocaloric materials and nanoscale pressure-induced transitions are reviewed, highlighting their potential as environmentally friendly alternatives to conventional refrigeration. Building on these insights, the paper proposes a novel application: pressure-driven cooling for computer hardware using phase-change materials. This approach may provide localized, energy-efficient, and sustainable thermal management for modern electronic systems.